<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            padding: 0;
            margin: 0;
        }
        div{
            height: 600px;
            font-size: 50px;
            text-align: center;
            line-height: 600px;
        }
        .one{
            background: url(https://img0.baidu.com/it/u=1333167057,1912558053&fm=253&fmt=auto&app=138&f=JPEG?w=640&h=426);
            background-size: 100% auto;
            background-attachment: fixed;
        }
        .two{
            background: url(img/1.jpg);
            background-size: 100% auto;
            
        }
        .three{
            background: url(img/2.jpg);
            background-size: 100% auto;
            background-attachment: fixed;
        }
        .four{
            background: url(img/3.jpg);
            background-size: 100% auto;
        }
    </style>
</head>
<body>
    <div class="one">1</div>
    <div class="two">2</div>
    <div class="three">3</div>
    <div class="four">4</div>
</body>
</html>